Improvement in straw-cutters



.J. H. MUMMA.

- Straw Cuttar.

Patented April 28,1863.

Hi PETERS/PhMo-Lilwmphu. Waihingtnn. n, c.

UNITED STATES PATENT. OFFICE.

JACOB H. MUMMA, OF HARRISBURG, PENNSYLVANIA.

.IMPROVEMENT IN STRAW-CUTTERS.

To all whom it may concern.-

Be it known that I, JACOB H. MUMMA, of Harrisburg city, county of Dauphin, and State of Pennsylvania, have invented new and useful Improvements in Straw and Stalk Gutters and Crushers; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

The nature of my'invention consists in the construction of a ribbed and flanged roller.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation, as followsto wit:

A represents the frame; B, the cover for the knives; O, the cylinder to which the knives D are attached. These knives are set diagonally and screwed onto knees E that are fastened to the heads of cylinder 0 by a slat in the cylinder, the knees having forked ends that set in the slat, and are screwed fast to the cylinder, so as to be adjusted by the screw F. The knives are beveled and have their cuttingedge sharpened from the under side, that the face of the knife may present a straight and square edge to the cutter-bar G, and in case a piece is accidentallybroke off the edge, it being sharpened from the under side, it nevertheless presents an unbroken sharp edge to the cutter-bar. The cylinder 0 works in journal-boxes H, fastened on the outside of the cutter-heads J. These boxes H are of metal, screwed onto the outside of cutterheads J, so as to be more permanently secure and steady, and easily replaced with new boxes as the old ones wear out.

K represents the upper roller, which is ribbed longitudinally and teeth set in the grooves between the ribs, for the purpose of drawing in and masticating the straw as the straw passes between it and the lower flanged roller, L, which also assists in drawing the straw forward to the cutter'bar G. The shafts or axles of the rollers K and L have beveled wheels M and a pinion-wheel, N, on one side, and a toothed wheel, P, on the other side. of the machine, attached to the axle of roller L. This toothed wheel P gears into a pinion, R, on the axle of cylinder 0, and is driven by the band-wheel S. A lever, T, (with coiled spring,) is attached to the axle of roller K, so that the roller may raise and lower and adjust itself to the quantity of the straw passing between the rollers K and L. The strawbox V has a perforated bottom, with small round holes W to allow the dirt and dust to be discharged, that the dirt does not come in contact with and spoil the edge of the knives.

What I claim as my invention, and desire to secure by Letters Patent, is-- 1. The ribbed and toothed roller for drawing and masticating the straw.

2. The flanged roller underneath for assisting the drawing of the straw forward to the cutter bar.

J. H. MUMMA.

Witnesses:

J. FRANKLIN REIGART, DANL. DRAWBAUGH. 

